/// <summary>
/// Authenticate User from Active directory based on his email address and password
/// </summary>
/// <param name="emailAddress">Email Address</param>
/// <param name="password">Password</param>
/// <returns>Session</returns>
public Session AuthenticateUserUsingCredentials( AuthDataRequest authData )
{
UserInfoResponse userInfo = new UserInfoResponse();
string emailAddress = authData.username;
string password = authData.password;
Session stat = new Session();
string msg = string.Empty;
if ( string.IsNullOrEmpty( emailAddress ) || string.IsNullOrEmpty( password ) )
{
stat.Message = "Email and/or password can't be empty!";
stat.IsAuthenticated = false;
return stat;
}
try
{
userInfo = GetUserAttributes( emailAddress );
if ( userInfo == null )
{
stat.Message = "Error: Couldn't fetch user information!";
stat.IsAuthenticated = false;
return stat;
}
var directoryEntry = new DirectoryEntry( LocalGcUri , userInfo.Upn , password );
directoryEntry.AuthenticationType = AuthenticationTypes.None;
var localFilter = string.Format( AdSearchFilter , emailAddress );
var localSearcher = new DirectorySearcher( directoryEntry );
localSearcher.PropertiesToLoad.Add( "mail" );
localSearcher.Filter = localFilter;
var result = localSearcher.FindOne();
if ( result != null )
{
stat.Message = "You have logged in successfully!";
stat.IsAuthenticated = true;
//Set the session Data
SessionData session = new SessionData();
session.Username = userInfo.EmailAddress;
session.Password = password;
session.SessionStart = DateTime.Now;
//Encrypt Session Data
stat.SessionKey = SessionHandler.EncryptSession( session );
return stat;
}
stat.Message = "Login failed, please try again.";
stat.IsAuthenticated = false;
return stat;
}
catch ( Exception ex )
{
stat.Message = "Wrong Email and/or Password " + ex;
stat.IsAuthenticated = false;
return stat;
}
}
/// <summary>
/// Validate Session Key if it is valid and if it is not expired
/// </summary>
/// <param name="sessionKey"></param>
/// <returns></returns>
public Session ValidateSession( string sessionKey )
{
Session stat = new Session();
if ( string.IsNullOrWhiteSpace( sessionKey ) )
{
stat.Message = "No Session key has been provide";
stat.IsAuthenticated = false;
return stat;
}
else
{
try
{
SessionData sessionData = SessionHandler.DecryptSession( sessionKey );
if ( sessionKey != null && ( ( DateTime.Now.Subtract( sessionData.SessionStart ) ).TotalHours < SessionTTL ) )
{
stat.Message = "You have logged in successfully!";
stat.IsAuthenticated = true;
stat.SessionKey = sessionKey;
return stat;
}
else
{
AuthDataRequest authData = new AuthDataRequest();
authData.username = sessionData.Username;
authData.password = sessionData.Password;
stat = AuthenticateUserUsingCredentials( authData );
stat.Message = "You have logged in successfully!, and Session key has been renewed";
return stat;
}
}
catch ( Exception ex )
{
stat.Message = "Couldn't validate Session key, kinldy authenticate first " + ex;
stat.IsAuthenticated = false;
return stat;
}
}
}